php由php5.4升級到php5.6

1.查看目前php版本php [root@syk ~]# php -v PHP 5.4.16 (cli) (built: Apr 12 2018 19:02:01) #目前版本是5.4 Copyright (c) 1997-2013 The PHP Group Zend Engine v2.4.0, Copyright (c) 1998-2013 Zend Technologies 2

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